Disk drive and tray control mechanism
    95.
    发明授权
    Disk drive and tray control mechanism 有权
    磁盘驱动器和托盘控制机制

    公开(公告)号:US08559281B2

    公开(公告)日:2013-10-15

    申请号:US12518327

    申请日:2007-12-14

    申请人: Kum Chung Loh Yu Zhou

    发明人: Kum Chung Loh Yu Zhou

    IPC分类号: G11B7/085

    CPC分类号: G11B17/047 G11B17/056

    摘要: A method to automatically detect and rectify a tray block in a disk drive comprising detecting an occurrence of a tray block in a disk drive upon receiving a tray-out command or a tray-in command by determining whether the tray is in an intermediate position for a predetermined time period, the intermediate position being a position between a first position within a casing of the disk drive and a second position projecting completely outwards from the casing, the tray arranged to receive a record carrier when in the second position and being supported for movement between the first position and the second position. The detected tray block is rectified by cleaning a brush-commutator interface of a tray motor arranged to move the tray between the first position and the second position and is useful for optical recorders and/or players which have a design of a tray open/close mechanism.

    摘要翻译: 一种自动检测和纠正磁盘驱动器中的托盘块的方法,包括:当通过确定托盘是否位于中间位置时,通过接收到托盘输出命令或托盘输入命令来检测磁盘驱动器中托盘块的出现 所述中间位置是在所述盘驱动器的壳体内的第一位置与从所述壳体完全向外突出的第二位置之间的位置,所述托盘布置成当处于所述第二位置时接收记录载体并被支撑为 第一位置与第二位置之间的移动。 检测到的托盘块通过清洁托盘电机的刷换器接口进行整流,托盘电机布置成在第一位置和第二位置之间移动托盘,并且对于具有托盘打开/关闭设计的光学记录器和/或玩家是有用的 机制。

    METHOD FOR PERFORMING CONDITION MONITORING IN A WIND FARM
    96.
    发明申请
    METHOD FOR PERFORMING CONDITION MONITORING IN A WIND FARM 审中-公开
    在风力发电机中进行状态监测的方法

    公开(公告)号:US20130261988A1

    公开(公告)日:2013-10-03

    申请号:US13807426

    申请日:2011-06-27

    IPC分类号: G01M15/14

    摘要: A method for performing condition monitoring on a plurality of wind turbines arranged in a wind farm is disclosed. The method comprises the steps of: for each wind turbine, obtaining at least one vibration signal, each vibration signal representing vibrations of one or more monitored components of the wind turbine, e.g. moving gear parts or bearings; generating a plurality of faulty frequency indexes, each faulty frequency index corresponding to a monitored component, each faulty frequency index being generated on the basis of one or more of the obtained vibration signals, and each faulty frequency index being generated in such a manner that variations in the vibration signals introduced by variations in rotational speed of one or more rotating shafts of the wind turbine are filtered out; comparing faulty frequency indexes originating from different wind turbines of the wind farm; and based on the comparing step, evaluating the condition of each of the monitored components of the plurality of wind turbines. The method allows vibration levels of components to be easily compared on wind farm level, and faulty or failing components are easily and reliably detected.

    摘要翻译: 公开了一种在布置在风电场中的多个风力涡轮机上执行状态监测的方法。 该方法包括以下步骤:对于每个风力涡轮机,获得至少一个振动信号,每个振动信号表示风力涡轮机的一个或多个受监视部件的振动,例如, 移动齿轮零件或轴承; 产生多个故障频率指标,每个故障频率指数对应于被监视的分量,每个故障频率指数是根据所获得的振动信号中的一个或多个产生的,并且每个故障频率指数以这样的方式产生: 在由风力涡轮机的一个或多个旋转轴的转速的变化引起的振动信号中被滤出; 比较源自风电场不同风力发电机组的故障频率指标; 并且基于所述比较步骤,评估所述多个风力涡轮机中的每个所监视的部件的状态。 该方法允许在风电场水平上轻松比较组件的振动水平,并且容易且可靠地检测故障或故障组件。

    Method and system for correction of errors
    98.
    发明授权
    Method and system for correction of errors 失效
    错误校正方法和系统

    公开(公告)号:US07907482B2

    公开(公告)日:2011-03-15

    申请号:US11995546

    申请日:2006-07-06

    申请人: Yu Zhou

    发明人: Yu Zhou

    IPC分类号: G11B7/00

    摘要: A method and system for removing periodic disturbances pertaining to turntable and spindle motor errors during recording of a blank optical information carrier. The periodic disturbances are determined in advance and removed only during recording by a repetitive control/learning feedforward control circuit (88).

    摘要翻译: 一种用于在记录空白光信息载体时去除与转台和主轴电机误差有关的周期性干扰的方法和系统。 周期性干扰预先确定,并且仅在通过重复控制/学习前馈控制电路(88)的记录期间被去除。

    Methods and systems for wind turbine generators
    99.
    发明授权
    Methods and systems for wind turbine generators 有权
    风力发电机的方法和系统

    公开(公告)号:US07884492B2

    公开(公告)日:2011-02-08

    申请号:US11939055

    申请日:2007-11-13

    IPC分类号: F03D9/00 H02P9/00

    摘要: Methods and systems for reducing heat loss in a generator system are provided. The generator system includes an electrical generator and a power converter. The method includes generating electricity in the generator at a first power factor and converting electricity in the converter at a second power factor in a first mode of operation and generating electricity in the generator at a third power factor wherein the third power factor is greater than the first power factor and converting electricity in the converter at a fourth power factor wherein the fourth power factor is less than the second power factor in a second mode of operation such that the power output of the generator system in the second mode of operation is substantially equal to the power output of the generator system in the first mode of operation and the generator currents are facilitated being reduced.

    摘要翻译: 提供了用于减少发电机系统中的热损失的方法和系统。 发电机系统包括发电机和电力转换器。 该方法包括在第一功率因数下在发电机中发电,并在第一工作模式下以第二功率因数转换转换器中的电,并以第三功率因数发电,其中第三功率因数大于 第一功率因数并且以第四功率因数转换转换器中的电力,其中在第二操作模式中第四功率因数小于第二功率因数,使得在第二操作模式中的发电机系统的功率输出基本相等 在第一操作模式下发电机系统的功率输出,并且减少发电机电流。